BOSTON (AP) - San Diego's usually reliable bullpen fell apart in a hurry Monday night. All it took was one inning.

The Padres began the day with a solid 2.50 bullpen ERA, but their relievers surrendered 10 runs in the seventh inning and 11 overall in a 14-5 loss to the Boston Red Sox.

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``Best 'pen in baseball as you guys know - top to bottom. You can look at the statistics,' Padres manager Bud Black said. ``Some soft hits, walks and hit by pitches. We just tried to stop the bleeding and couldn't.'

Corey Luebke (1-2) cruised through three hitless innings before walking Jacoby Ellsbury to begin the Boston seventh. Dustin Pedroia reached on a fielder's choice before former Padres slugger Adrian Gonzalez doubled in the go-ahead run, making it 4-3.

That was it for Luebke and that was it for the game. Ernesto Frieri and Evan Scribner followed and combined for eight runs and three walks, with Frieri hitting consecutive batters with the bases loaded.

``No matter how many pitches you've been out there for, you can't walk the leadoff hitter. I kind of started the mess there,' said Luebke, who struck out six in 3 1-3 innings.

``We had 13 hits and they had 14 and we lost by nine runs,' Black said. ``You can't walk guys in this park.'

Gonzalez drove in three runs in the 10-run inning that sent the Padres to their season-high sixth straight loss. He boosted his major league-leading RBI total to 67 since San Diego, unable to give him a lucrative contract, traded him to the Red Sox in the offseason for three top prospects. He also went 3 for 5 to increase his batting average to .353, also the best in the majors.

San Diego, which began the day with a major league-low .232 average, got four hits from Chase Headley and three from Orlando Hudson, who belted a tying homer in the sixth inning.

Matt Albers (2-3) pitched 1 1-3 scoreless innings for the AL East-leading Red Sox, who won for the 14th time in 16 games to remain 1 1/2 ahead of the New York Yankees.

After Gonzalez's tiebreaking hit, Kevin Youkilis flied out before the Red Sox scored nine more runs.

David Ortiz was walked intentionally and J.D. Drew walked, loading the bases. Frieri then hit Marco Scutaro and Jason Varitek to make it 6-3. Josh Reddick tacked on a two-run double, and Pedroia walked with the bases loaded. Gonzalez drove in two more with a base hit and Youkilis had a two-run double.

It was the most runs for the Red Sox in a single inning since they scored 12 in the sixth in a 13-3 win over Cleveland on May 7, 2009. The team record is 17 runs in the seventh against Detroit on June 18, 1953.

The previous biggest inning for the Red Sox this season was seven runs in three games, the last on June 11 at Toronto.

Boston added another run, on a bases-loaded walk to Ellsbury, in the eighth.

NOTES: Headley went 4 for 5 and is 16 for 30 on the road trip. ... Ortiz has hit in 14 straight games at Fenway Park. ... Black made his major league debut at Fenway on Sept. 5, 1981, for the Seattle Mariners. He faced one batter, Rick Miller, throwing a wild pitch before allowing a single. ... Boston manager Terry Francona is considering using first baseman Gonzalez in the outfield for some games during a nine-game interleague trip to Pittsburgh, Philadelphia and Houston. That would give designated hitter Ortiz a chance to play first base rather than miss all the games. Gonzalez has played the outfield just once in his 929 games - making three putouts and an error on Sept. 30, 2005, for the Texas Rangers against the Los Angeles Angels. ... Padres catcher Nick Hundley broke an 0-for-17 slump with a single in the eighth.